Traxxas TRX-4 Aluminum Portal Drive Housing Upgrade - JR-TRX406-GU by Jazrider  [JR-TRX406-GU]

Machined aluminum outer portal for TRX-4

This is an RC-scale replacement outer portal drive housing designed for Traxxas TRX-4 scale and trail crawler models. Finished in gun metal, the component is a machined aluminum outer shell intended as a front or rear outer portal housing to replace worn or damaged plastic covers while maintaining the portal axle geometry of the chassis.

The part acts as a robust external cover for the portal assembly and helps preserve correct wheel offset and axle alignment when installed as a direct swap on compatible TRX-4 portal setups. It is suitable for tuners who want a metal external face that resists abrasion and visually matches other aluminium hop-ups on the vehicle.

Fitting is straightforward for experienced technicians: remove the wheel and the original outer housing following your TRX-4 service routine, install the aluminium outer shell in place of the OEM cover, and secure original fasteners to their factory engagement. Observe Traxxas service guidance for fastener seating and bearing retention, and confirm clearance before operating the model.